The Soviet system used psychiatry as a weapon by diagnosing political opponents as mentally ill in order to confine them as patients instead of trying them in court. Anyone who challenged the state such as dissidents, writers, would-be emigrants, religious believers, or human rights activists could be branded with fabricated disorders like sluggish schizophrenia. This turned normal political disagreement into supposed medical pathology and allowed the state to present dissent as insanity.
Once labeled in this way, people were placed in psychiatric hospitals where they could be held for long periods without legal protections. Harsh treatments were often used to break their resolve. The collaboration between state security organs and compliant psychiatrists created a system where political imprisonment was disguised as medical care, letting the Soviet regime suppress opposition while pretending it was addressing illness rather than silencing critics.
The thing is, you guys automatically co relate socialism with authoritarianism and justify it through selective cases, most of which are western capitalist propaganda. Bad things happened in USSR? sure, does that make the socialist ideology bad? hell no. You would rarely see any liberal talking about the successes of socialist experiments, rather they will just dismiss them by calling it authoritarianism. Ends doesnt justify means but what led to bad things in those means should also be seen critically.
You literally compared lenin to hitler, that boggled my mind like lenin led peoples movement and overthrew tsarist russia and freed peasants and working class from feudal chains. Lenin was progressive, he didnt hated a certain ethnic group nor he murdered anyone on basis of their skin color. You are far off the cliff, you should atleast read about lenin and read more about communism in general.